I can find Apache by searching for Apache, i find Mysql by searching for Mysql, i find PHP by searching for PHP and finally i can find Mariadb by searching for Mariadb. All of these in software manager of Linux Mint 19.

I can find Apache by searching for Apache, i find Mysql by searching for Mysql, i find PHP by searching for PHP and finally i can find Mariadb by searching for Mariadb. All of these in software manager of Linux Mint 19.